2363132 637367 Malus angustifolia (Aiton) Michx. [80 857461 Pyrus angustifolia Aiton] A. Lounsberry, E. Rowan, A guide to the trees: t. 80 (1900) [E. Rowan]
 
2360902 637367 Malus angustifolia (Aiton) Michx. [80 857461 Pyrus angustifolia Aiton] A. Lounsberry, E. Rowan, Southern wild flowers and trees: p. 247, t. 73 (1901) [E. Rowan]